Error import object file on server with NodeJS

My code is works at local, but when i upload to Server, cannot load the object. Either .obj, .babylon, or .gltf. This is the error report from console:
babylon.js:16 BJS - [23:21:01]: Unable to import meshes from images/conveyor.babylon: importMesh of undefined from undefined version: undefined, exporter version: undefinedimportMesh has failed JSON parse

anybody can help me please?